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Finding the Fourth Proportional to 180,528.39, 249,136.95 and 99,955.90

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Solution

The fourth proportional to 180,528.39, 249,136.95 and 99,955.90 is: 137,943.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,528.39 : 249,136.95 = 99,955.90 : x
  2. Step 2: Convert to fraction form
    180,528.39/249,136.95 = 99,955.90/x
  3. Step 3: Cross multiply
    180,528.39x = 249,136.95 × 99,955.90
  4. Step 4: Simplify right side
    180,528.39x = 24,902,708,060.51
  5. Step 5: Solve for x
    x = 24,902,708,060.51/180,528.39
  6. Step 6: Final answer
    x = 137,943.45

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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.