Home / 156,957.03-216,355.32-128,394.81

Finding the Fourth Proportional to 156,957.03, 216,355.32 and 128,394.81

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Solution

The fourth proportional to 156,957.03, 216,355.32 and 128,394.81 is: 176,984.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,957.03 : 216,355.32 = 128,394.81 : x
  2. Step 2: Convert to fraction form
    156,957.03/216,355.32 = 128,394.81/x
  3. Step 3: Cross multiply
    156,957.03x = 216,355.32 × 128,394.81
  4. Step 4: Simplify right side
    156,957.03x = 27,778,900,203.89
  5. Step 5: Solve for x
    x = 27,778,900,203.89/156,957.03
  6. Step 6: Final answer
    x = 176,984.11

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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.