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Finding the Fourth Proportional to 157,802.60, 236,646.30 and 78,890.60

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Solution

The fourth proportional to 157,802.60, 236,646.30 and 78,890.60 is: 118,307.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,802.60 : 236,646.30 = 78,890.60 : x
  2. Step 2: Convert to fraction form
    157,802.60/236,646.30 = 78,890.60/x
  3. Step 3: Cross multiply
    157,802.60x = 236,646.30 × 78,890.60
  4. Step 4: Simplify right side
    157,802.60x = 18,669,168,594.78
  5. Step 5: Solve for x
    x = 18,669,168,594.78/157,802.60
  6. Step 6: Final answer
    x = 118,307.10

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1.5x scale

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.