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Finding the Fourth Proportional to 180,424.40, 249,001.80 and 99,870.80

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Solution

The fourth proportional to 180,424.40, 249,001.80 and 99,870.80 is: 137,830.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,424.40 : 249,001.80 = 99,870.80 : x
  2. Step 2: Convert to fraction form
    180,424.40/249,001.80 = 99,870.80/x
  3. Step 3: Cross multiply
    180,424.40x = 249,001.80 × 99,870.80
  4. Step 4: Simplify right side
    180,424.40x = 24,868,008,967.44
  5. Step 5: Solve for x
    x = 24,868,008,967.44/180,424.40
  6. Step 6: Final answer
    x = 137,830.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.