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Finding the Fourth Proportional to 98,031.60, 145,938.78 and 97,448.40

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Solution

The fourth proportional to 98,031.60, 145,938.78 and 97,448.40 is: 145,070.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,031.60 : 145,938.78 = 97,448.40 : x
  2. Step 2: Convert to fraction form
    98,031.60/145,938.78 = 97,448.40/x
  3. Step 3: Cross multiply
    98,031.60x = 145,938.78 × 97,448.40
  4. Step 4: Simplify right side
    98,031.60x = 14,221,500,608.95
  5. Step 5: Solve for x
    x = 14,221,500,608.95/98,031.60
  6. Step 6: Final answer
    x = 145,070.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.