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Finding the Fourth Proportional to 171,868,937.60, 257,425,492.80 and 90,995,427.20

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Solution

The fourth proportional to 171,868,937.60, 257,425,492.80 and 90,995,427.20 is: 136,293,055.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,868,937.60 : 257,425,492.80 = 90,995,427.20 : x
  2. Step 2: Convert to fraction form
    171,868,937.60/257,425,492.80 = 90,995,427.20/x
  3. Step 3: Cross multiply
    171,868,937.60x = 257,425,492.80 × 90,995,427.20
  4. Step 4: Simplify right side
    171,868,937.60x = 23,424,542,689,506,528
  5. Step 5: Solve for x
    x = 23,424,542,689,506,528/171,868,937.60
  6. Step 6: Final answer
    x = 136,293,055.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.