Home / 130,493.95-180,078.59-76,782.45

Finding the Fourth Proportional to 130,493.95, 180,078.59 and 76,782.45

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Solution

The fourth proportional to 130,493.95, 180,078.59 and 76,782.45 is: 105,957.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,493.95 : 180,078.59 = 76,782.45 : x
  2. Step 2: Convert to fraction form
    130,493.95/180,078.59 = 76,782.45/x
  3. Step 3: Cross multiply
    130,493.95x = 180,078.59 × 76,782.45
  4. Step 4: Simplify right side
    130,493.95x = 13,826,875,074.51
  5. Step 5: Solve for x
    x = 13,826,875,074.51/130,493.95
  6. Step 6: Final answer
    x = 105,957.98

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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.